Type 8640

13 | 32

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3.

Circuit functions

3.1. Standard functions

Symbol

Description

2(A)

1(P)

3(R)

12

Circuit function C (CF C)

3/2-way solenoid valve

Servo-controlled, with manual override

Normally closed

4

1

5

14

2

1

3

12

Circuit function C (CF C)

2 x 3/2-way solenoid valve

Servo-controlled, with manual override

Normally closed

2(B)

1(P)

3(R)

10

Circuit function D (CF D)

3/2-way solenoid valve

Servo-controlled, with manual override

Normally open

14

12

4

2

5 1 3

Circuit function H (CF H)

5/2-way solenoid valve

Servo-controlled, with manual override

Pressure applied via port (1), therefore one of the two ports (2) or (4) is under pressure.

14

12

4 2

5 1 3

Circuit function L (CF L)

5/3-way solenoid valve

With manual override

In middle position all ports locked

14

12

4

2

5 1 3

Circuit function N (CF N)

5/3-way solenoid valve

With manual override

In middle position ports 2 and 4 exhausted

14

12

4

2

5 1 3

Circuit function Z (CF Z)

5/2-way solenoid valve

Impulse version with 2 coils and manual override

Pressure applied via port (1), therefore one of the two ports (2) or (4) is under pressure.

3.2. SIA variant

Symbol

Description

12

2(A)

1(P)

3(R)

Circuit function C (CF C)

3/2-way solenoid valve

Servo-controlled

Normally closed

4

1

5

14

2

1

3

12

Circuit function C (CF C)

2 x 3/2-way solenoid valve

Servo-controlled

Normally closed

2(B)

1(P)

3(R)

10

Circuit function D (CF D)

3/2-way solenoid valve

Servo-controlled

Normally open

14

12

2(B)

4(A)

1(P)

3(R)

Circuit function G (CF G)

4/2-way solenoid valve

Servo-controlled